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  2. Lens fungus - Wikipedia

    en.wikipedia.org/wiki/Lens_fungus

    The sensor or glass surfaces of the lens are clouded by the fungal attack and lens coatings may be etched away. The fungus can range from small, barely visible points to an irregularly spreading mesh, to complete "blindness" of the optics. [1] Example of an image from a camera with fungus in the low pass filter glass.

  3. iPhone 13 - Wikipedia

    en.wikipedia.org/wiki/IPhone_13

    The iPhone 13 and 13 Mini feature the same camera system with three cameras: one front-facing camera (12MP f/2.2) and two back-facing cameras: a wide (12MP f/1.6) and ultra-wide (12MP f/2.4) camera. The back-facing cameras both contain larger sensors for more light-gathering with new sensor shift optical image stabilization (OIS) on the main ...

  4. Bubblegram - Wikipedia

    en.wikipedia.org/wiki/Bubblegram

    A laser glass sculpture of a caffeine molecule. A bubblegram (also known as laser crystal, Subsurface Laser Engraving, 3D crystal engraving or vitrography) is a solid block of glass or transparent plastic that has been exposed to laser beams to generate three-dimensional designs inside.

  5. Glass etching - Wikipedia

    en.wikipedia.org/wiki/Glass_etching

    186 etched glass at Bankfield Museum. Glass etching, or "French embossing", is a popular technique developed during the mid-1800s that is still widely used in both residential and commercial spaces today. Glass etching comprises the techniques of creating art on the surface of glass by applying acidic, caustic, or abrasive substances.

  6. Focusing screen - Wikipedia

    en.wikipedia.org/wiki/Focusing_screen

    Cameras with interchangeable film formats (view cameras, field cameras and some medium format cameras) may have etchings on the focusing screen to show the limits of the films. Most of these cameras have either plain or grid screens because due to the size of the focusing screen the only focusing aid really needed is a magnifying glass.

  7. 5D optical data storage - Wikipedia

    en.wikipedia.org/wiki/5D_optical_data_storage

    5D optical data storage (also branded as Superman memory crystal, [1] a reference to the Kryptonian memory crystals from the Superman franchise) is an experimental nanostructured glass for permanently recording digital data using a femtosecond laser writing process. [2]

  8. Reticle - Wikipedia

    en.wikipedia.org/wiki/Reticle

    The first suggestion for etched glass reticles was made by Philippe de La Hire in 1700. [5] His method was based on engraving the lines on a glass plate with a diamond point. Many modern crosshairs are actually etched onto a thin plate of glass , which allows a far greater latitude in shapes.

  9. Photoengraving - Wikipedia

    en.wikipedia.org/wiki/Photoengraving

    A print made in 1907 from a photoengraved plate. It reproduces a sketch of Parga's castle made by Ludwig Salvator.. Photoengraving is a process that uses a light-sensitive photoresist applied to the surface to be engraved to create a mask that protects some areas during a subsequent operation which etches, dissolves, or otherwise removes some or all of the material from the unshielded areas of ...